Variable Intake Solenoid System

What it means

P1529 is defined as "Variable Intake Solenoid System". the engine control module stores it when the monitored condition for this component or system is outside the limits programmed by the manufacturer.

This entry is compiled automatically from the standard definition and typical diagnostic practice for this type of fault. A detailed, reviewed article is in preparation.

Symptoms

• Check engine light on
• Rough or unstable idle
• Hesitation or poor acceleration
• Increased fuel consumption
• Possible limp mode with reduced power

Common causes

1. Variable Intake Solenoid System worn, contaminated or out of calibration
2. Mechanical problem in the system the sensor measures
3. Air, vacuum or exhaust leak influencing the reading
4. Wrong or low-quality replacement part
5. Wiring resistance causing a small voltage offset

How to diagnose

1. Compare the live Variable Intake Solenoid System reading with a known-good value or a second sensor at idle and at 2500 rpm
2. Check for air, vacuum or exhaust leaks that could skew the reading
3. Inspect the component for contamination and clean it if the design allows
4. Verify the part number is correct for the engine
5. Replace the Variable Intake Solenoid System if the reading remains out of specification

Related codes

Nearby codes in this group

• P1528IVC Solenoid Circuit Malfunction
• P1530Air Bypass Valve System
• P1527Variable Intake Solenoid #2 Circuit Malfunction
• P1531Air Bypass System
• P1526Variable Intake Solenoid #1 Circuit Malfunction
• P1532Accelerate Warmup Solenoid Circuit Malfunction
• P1525Intake Manifold Runner Control Circuit Malfunction
• P1533Subsidiary Throttle Valve Solenoid Circuit Malfunction